HR7843

Above the horizon. Rise: 18:00 | Tran: 1:32 | Set: 9:04

Alt: 39.44° Az: 333.23° Direction: North-North-West

HR7843 is a variable and double main-sequence star of spectral class B9 in the constellation of Cygnus.

HR7843 visual magnitude is 5.91. Because of its faintness, HR7843 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR7843. The red arrow shows the motion of HR7843 during the next 100000 years (3.33 arcmin in Right Ascension and 8.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 30m 05s

Declination +56° 09’ 15”

Hour Angle 02h 34m 35s

Sidereal Time 23h 04m 40s

J2000

Right Ascension 20h 29m 27s

Declination +56° 04’ 05”

Galactic Coordinates

Galactic Longitude 91.89°

Galactic Latitude 9.92°

Finder Chart

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Finder chart for HR7843.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.91

Class Main-sequence

Absolute magnitude -1.28

Spectral Type B9V

Color Index (B-V) -0.04

Temperature 10653K

The red dot in the diagram below shows where HR7843 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7843. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7843 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR7843 double sysyem:

Main star magnitude 5.91

Secondary star magnitude 8.41

Magnitude difference 2.5

Separation 0.8 arcsec

Distance, Radial Speed, Proper Motion

HR7843 is distant 895.60 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

Distance (parsec) 274.73

Distance (light year) 895.60

Radial Speed -22 km/s

Proper Motion RA 0.002 arcsec/y

Proper Motion Dec 0.005"/y

Alternative Designations

Henry Draper Catalogue HD195554

SAO Catalogue SAO32627

Hipparcos Catalogue HIP101084

Durchmusterung Catalogue BD+55 2411

FK5 Catalogue 3640

General Catalogue of Variable Stars 13115

Visibility from Your Location

Today's HR7843 rise, transit and set times from Guacamaya, Honduras are the following (all times relative to the local timezone America/Tegucigalpa):

Azimuth: 33.8° RISE 18:00

Max altitude: 48.9° TRANSIT 1:32

Azimuth: 326.2° SET 9:04

Name:	Guacamaya, Honduras
Latitude:	15° 1' 0.1" N
Longitude:	88° 9' 0.0" W
Timezone:	America/Tegucigalpa

Set Location

Other stars in Cygnus